The scaenae frons was most useful in the pursuit of what roman art??

Answer 1

Theatre

Answer 2

Yes, John is correct, in theatre. Link below may help you.

(Latin) Front of the façade of the stage house or scaenae; pierced by three to five doors; unadorned in earlier theatres, but became increasingly ornate by the 2nd century with the addition of columns, niches, and statues decorating up to three stories of architecture.